Frank

Frank is a large combine harvester whose behavior closely resembles a bull. He guards the tractors at night while they sleep, and attempts to get Mater and Lightning McQueen when he finds that they are tractor tipping.

Bio
Frank is a combine harvester who watches over the tractors to ensure that they are safe and out of trouble. When Mater and Lightning McQueen are tractor tipping, Frank angrily chases them out of the field.